From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Mon, 6 Jul 2020 13:46:06 -0700
Subject: Adjust accessibility_ui for Electron

This tweaks Chrome's Accessibility support at chrome://accessibility
to make it usable from Electron by replacing use of the Profile PrefService
with Electron's own PrefService in ElectronBrowserContext. It also removes
usage of BrowserList and Browser as we subclass related methods and use our
WindowList.

diff --git a/chrome/browser/ui/webui/accessibility/accessibility_ui.cc b/chrome/browser/ui/webui/accessibility/accessibility_ui.cc
index 12066e1449141a1d498d6f17d3a18feda94f56b8..0af673fb8c2fcaa37876d1e2c658233e08007056 100644
--- a/chrome/browser/ui/webui/accessibility/accessibility_ui.cc
+++ b/chrome/browser/ui/webui/accessibility/accessibility_ui.cc
@@ -48,6 +48,7 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_ui_data_source.h"
+#include "electron/shell/browser/electron_browser_context.h"
 #include "ui/accessibility/accessibility_features.h"
 #include "ui/accessibility/ax_updates_and_events.h"
 #include "ui/accessibility/platform/ax_platform_node.h"
@@ -174,7 +175,7 @@ base::Value::Dict BuildTargetDescriptor(content::RenderViewHost* rvh) {
                                accessibility_mode);
 }
 
-#if !BUILDFLAG(IS_ANDROID)
+#if 0
 base::Value::Dict BuildTargetDescriptor(Browser* browser) {
   base::Value::Dict target_data;
   target_data.Set(kSessionIdField, browser->session_id().id());
@@ -208,7 +209,7 @@ void HandleAccessibilityRequestCallback(
   DCHECK(ShouldHandleAccessibilityRequestCallback(path));
 
   base::Value::Dict data;
-  PrefService* pref = Profile::FromBrowserContext(current_context)->GetPrefs();
+  PrefService* pref = static_cast<electron::ElectronBrowserContext*>(current_context)->prefs();
   ui::AXMode mode =
       content::BrowserAccessibilityState::GetInstance()->GetAccessibilityMode();
   bool is_native_enabled = content::BrowserAccessibilityState::GetInstance()
@@ -241,7 +242,7 @@ void HandleAccessibilityRequestCallback(
   data.Set(kViewsAccessibility, features::IsAccessibilityTreeForViewsEnabled());
 
   std::string pref_api_type =
-      pref->GetString(prefs::kShownAccessibilityApiType);
+      std::string(pref->GetString(prefs::kShownAccessibilityApiType));
   bool pref_api_type_supported = false;
 
   std::vector<ui::AXApiType::Type> supported_api_types =
@@ -308,11 +309,11 @@ void HandleAccessibilityRequestCallback(
   data.Set(kPagesField, std::move(page_list));
 
   base::Value::List browser_list;
-#if !BUILDFLAG(IS_ANDROID)
+#if 0
   for (Browser* browser : *BrowserList::GetInstance()) {
     browser_list.Append(BuildTargetDescriptor(browser));
   }
-#endif  // !BUILDFLAG(IS_ANDROID)
+#endif
   data.Set(kBrowsersField, std::move(browser_list));
 
   base::Value::List widgets_list;
@@ -646,7 +647,8 @@ void AccessibilityUIMessageHandler::SetGlobalString(
   const std::string value = CheckJSValue(data.FindString(kValueField));
 
   if (string_name == kApiTypeField) {
-    PrefService* pref = Profile::FromWebUI(web_ui())->GetPrefs();
+    PrefService* pref = static_cast<electron::ElectronBrowserContext*>(
+            web_ui()->GetWebContents()->GetBrowserContext())->prefs();
     pref->SetString(prefs::kShownAccessibilityApiType, value);
   }
 }
@@ -699,7 +701,8 @@ void AccessibilityUIMessageHandler::RequestWebContentsTree(
                      AXPropertyFilter::ALLOW_EMPTY);
   AddPropertyFilters(property_filters, deny, AXPropertyFilter::DENY);
 
-  PrefService* pref = Profile::FromWebUI(web_ui())->GetPrefs();
+  PrefService* pref = static_cast<electron::ElectronBrowserContext*>(
+              web_contents->GetBrowserContext())->prefs();
   ui::AXApiType::Type api_type =
       ui::AXApiType::From(pref->GetString(prefs::kShownAccessibilityApiType));
   std::string accessibility_contents =
@@ -726,6 +729,7 @@ void AccessibilityUIMessageHandler::RequestNativeUITree(
                      AXPropertyFilter::ALLOW_EMPTY);
   AddPropertyFilters(property_filters, deny, AXPropertyFilter::DENY);
 
+#if 0
   for (Browser* browser : *BrowserList::GetInstance()) {
     if (browser->session_id().id() == session_id) {
       base::Value::Dict result = BuildTargetDescriptor(browser);
@@ -738,6 +742,7 @@ void AccessibilityUIMessageHandler::RequestNativeUITree(
       return;
     }
   }
+#endif
 #endif  // !BUILDFLAG(IS_ANDROID)
   // No browser with the specified |session_id| was found.
   base::Value::Dict result;
@@ -806,11 +811,13 @@ void AccessibilityUIMessageHandler::StopRecording(
 }
 
 ui::AXApiType::Type AccessibilityUIMessageHandler::GetRecordingApiType() {
-  PrefService* pref = Profile::FromWebUI(web_ui())->GetPrefs();
-  const std::vector<ui::AXApiType::Type> supported_types =
-      content::AXInspectFactory::SupportedApis();
+  PrefService* pref = static_cast<electron::ElectronBrowserContext*>(
+            web_ui()->GetWebContents()->GetBrowserContext())->prefs();
   ui::AXApiType::Type api_type =
       ui::AXApiType::From(pref->GetString(prefs::kShownAccessibilityApiType));
+
+  const std::vector<ui::AXApiType::Type> supported_types =
+      content::AXInspectFactory::SupportedApis();
   // Check to see if it is in the supported types list.
   if (std::find(supported_types.begin(), supported_types.end(), api_type) ==
       supported_types.end()) {
@@ -880,8 +887,11 @@ void AccessibilityUIMessageHandler::RequestAccessibilityEvents(
 // static
 void AccessibilityUIMessageHandler::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
+#if 0
   const std::string_view default_api_type =
       std::string_view(ui::AXApiType::Type(ui::AXApiType::kBlink));
   registry->RegisterStringPref(prefs::kShownAccessibilityApiType,
                                std::string(default_api_type));
+  registry->RegisterBooleanPref(prefs::kShowInternalAccessibilityTree, false);
+#endif
 }
diff --git a/chrome/browser/ui/webui/accessibility/accessibility_ui.h b/chrome/browser/ui/webui/accessibility/accessibility_ui.h
index d9ae654c8405621925e39f0b28b9288c0ea151f6..ab5b4249b4f5c01be04ed27cf53e8c286548f6db 100644
--- a/chrome/browser/ui/webui/accessibility/accessibility_ui.h
+++ b/chrome/browser/ui/webui/accessibility/accessibility_ui.h
@@ -30,6 +30,8 @@ class ScopedAccessibilityMode;
 class WebContents;
 }  // namespace content
 
+class ElectronAccessibilityUIMessageHandler;
+
 namespace user_prefs {
 class PrefRegistrySyncable;
 }  // namespace user_prefs
@@ -80,6 +82,8 @@ class AccessibilityUIMessageHandler : public content::WebUIMessageHandler {
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
  private:
+  friend class ElectronAccessibilityUIMessageHandler;
+
   // Applies `mode` to `web_contents` for the lifetime of the accessibility
   // UI page.
   void SetAccessibilityModeForWebContents(content::WebContents* web_contents,
